SQLIsNull (Ontopia)

java.lang.Object
- net.ontopia.persistence.query.sql.SQLIsNull

All Implemented Interfaces:

SQLExpressionIF
```
public class SQLIsNull
extends Object
implements SQLExpressionIF
```
INTERNAL: SQL condition: is null
A NULL condition tests for nulls.

Field Summary

Fields
Modifier and Type Field Description

protected SQLValueIF value
- Fields inherited from interface net.ontopia.persistence.query.sql.SQLExpressionIF
  AND, EQUALS, EXISTS, FALSE, IN, IS_NULL, JOIN, LIKE, NOT, NOT_EQUALS, OR, SET_OPERATION, VALUE_EXPRESSION, VERBATIM

Constructor Summary

Constructors
Constructor Description

SQLIsNull(SQLValueIF value)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`int`	`getType()`	INTERNAL: Returns the expression type.
`SQLValueIF`	`getValue()`
`void`	`setValue(SQLValueIF value)`
`String`	`toString()`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Field Detail
  - value
```
protected SQLValueIF value
```
- Constructor Detail
  - SQLIsNull
```
public SQLIsNull(SQLValueIF value)
```
- Method Detail
  - getType
```
public int getType()
```
    Description copied from interface: SQLExpressionIF
    
    INTERNAL: Returns the expression type. The type is represented by one of the constants in the SQLExpressionIF interface.
    
    Specified by:
    
    getType in interface SQLExpressionIF
  - getValue
```
public SQLValueIF getValue()
```
  - setValue
```
public void setValue(SQLValueIF value)
```
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object